Autogovernor



y 1943 G. A. ROBBINS z gmzm AUTO GOVERNOR Fi led Aug. 24, 1939 2 Sheets-Sheet l Patented May 18, 1943 UNlTED STATES PATENT OFFICE AUTOGOVERNOR George A. Robbins, Hilliar Township, Knox County, Ohio Application August 24, 1939, Serial No. 291,792

(01. zooms) 27 Claims.

This invention relates to centralized motor controls generally; and more particularly to a motor control for operating the starting and ignition system as well as the throttle and choke valves of an internal combustion engine from a common control member.

The invention more specifically relates to centralized motor control of internal combustion engines and particularly to motor controls for operation of the starter and ignition systems and for the regulation of the choke and throttle valves by an activating element operating a single operative member which latter, may on occasion, in turn be automatically operated.

The main object of the invention is to provide a centralized motor control in which a single operating member is employed to render the starting motor operative to crank the engine and to close the circuit through the ignition system and automatically cut off the operation of the starting motor as soon as the engine is started in operation under control of the ignition system.

The further object of the invention is to provide a motor control in which a single operating member is employed to operate the starting motor and close the circuit through the ignition system and to operate the choke and throttle of the engine whenever such operation becomes necessary in cold weather.

A further object of the invention is to provide a motor control in which a single operating memher is employed to operate the starting motor prior to closure of the ignition current, which method is generally considered preferable for the starting and continued operation of the engine and may be accomplished by a slower movement of the single operating member, and whenever desirable by further movement of the single operating member to operate the choke and throttle but only when necessary on account of weather conditions.

A further object of the invention is to return the choke and throttle controls automatically by a slow movement which is easily adjustable by tightening or loosening of cup plunger assemblies during seasonal changing weather conditions, the choke and throttle control mechanisms being so constructed as to still allow selective manual operation but always eventually being returned automatically to inactive position.

A further object of the invention is to automatically return the single operating member to inoperative position in event the engine is not operating thereby cutting oil the circuits to the battery, and inasmuch as such action is caused of the motor control shown in both manual and automatic operation of the single operating member the ignition and starting circuits are always out out except when the engine is operating or being started.

Other objects of the invention will become apparent as the detailed description thereof proceeds.

In the drawings:

Figure 1 is a fragmentary side elevation of an automobile engine and cross section of the dashboard of an automobile showing a centralized motor control in a preferred location and as mounted on the chassis of an automobile;

Figure 2 is a top plan, to an enlarged scale,

in Figure 1;

Figure 3 is a vertical, longitudinal section taken on the line 33 of Figure 2;

Figure 4 is a horizontal section taken on the line 44 of Figure 3;

Figure 5 is a vertical, transverse section taken on the line 55 of Figure 3; and

Figure 6 is a fragmentary detail in elevation of one of the contact elements forming part of this invention; and

Figure 7 is a fragmentary detail showing a wire choke or throttle connection.

As shown in the drawings, the invention comprises a casing 6 preferably in the form of a drawer having side walls I and 8 connected at their lower edges by a bottom 9 and having their opposite ends connected by a rear Wall I0 and a front wall H. The drawer 6 is mounted to slide on a horizontal partition I2 extending from the division l3 and bent at its forward edge to form a flange I 4 adapted to be suitably secured to the rear face of the instrument board [5. This instrument board l5 and the division l3 are provided with registering apertures l6 and I! in which the drawer fits snugly.

The front wall I l of the drawer projects beyond the sides I and 8 and below the bottom 9 and above the top edges of the sides 1 and 8 to form a stop flange adapted to contact with the face of the instrument board l5 to limit the inward movements of the drawer 6 in the usual manner. All the parts of this centralized motor control are mounted within the drawer 6 to facilitatevthe assembly of the parts and to facilitate the mounting of the instrument as a unit in convenient position on the instrument board of the automobile.

The drawer 6 is provided with a partition l8 of less depth than either of the sides I and 8 and suitably secured to the ends l0 and H and parallel to the side I to form a chamber l9 in which a main slide plate 3| from a long contact plate 32 embedded in one face of the said plate 3| for a purpose to be described hereafter. The wire 22 is also connected to the terminal 32" of plate 32. Although plates 32 and 32' in their preferred form are shown of different lengths they can be made of the same length if that should be desired to operate simultaneously by continuing plate 32" to the right (Figure 6) but the pation is to all purposes practically simultaneous it quickly operated.

The plate 3|, preferably of insulating material likea greasy or bearing type plastic (see Figure is of substantially the same depth as the par-- tition i8, and 'ismounted to slide with one of its faces in contact'with the'partition i8, a small strap 33 of angle iron being secured to the bottom 9 of the drawer and in contact with the outer face of the plate 3| to hold said plate slidably positioned against the partition l8. edge of the p1ate3l has a bracket 35 secured thereto by screws 35, and this bracket has one end 36 upturned and provided with a slot Bl in which is slidably mounted the throttle rod 20.

The throttle rod 26 extends slidably through a bushing 38 suitably secured in an aperture formed in the front wall l of the drawer 6. The outer end of the throttle rod 20 is provided with a button 36 by means of which the rod 26 may be moved manually to operate the throttle. The other end of the throttle rod 28 is bent downwardly within the chamber l9 and passes through an aperture t!) formed in the end wall IU of the drawer 6; and, is pivotally connected at its outer end to a lever ll for operating the throttle in the carburetor designated generally by the reference numeral C;

A dash pct 42, secured at one end to the end wall iii of the drawer 6, slidably receives a piston 13 secured toone end of a piston rod 44, the other end of which. is bent downwardly to form a U-shaped member having legs 45 and 46 extending on opposite sides 'of the rod 20, with the central part of this member forming a. seat in which the throttle rod 20 is adapted to slide. Theupper end of the leg 45 projects above the piston rod 64 and ha one end of'a tension spring 41 suitably secured thereto, the other end ofsaid spring being detachably connected to an eyelet 4B suitably secured to the rear wall l6 of the drawer 6.

parts of the control are in inoperative position,

oneend; oithe'spacer will be in contact-, with the adjacent end of the flangetfi and the otherend will be in contact with the U-shapedrriember The upper It will be obvious from inspection of Figures 2 and 5 of the draw-,

in the dash pct 42 will *A spacer 49 is secured to the-throttle rod 20 and is of such length that when all theembracing the throttle rod 20 and formed by the parallel legs 45 and 46.

A choke rod 2% extends slidably through a bushing 33 on the .front wall H and is p ovided with a button 39' to manipulate said rod in the same manner as the throttle rod 2t. This choke rod 26 and the operating parts connected therewith as hereinafter described are substantially the same as those connected with the throttle rod 26, the corresponding parts being designated by the same reference numerals primed.

A variation in the detail construction of the throttle or choke control rods is shown in Figure '7 wherein instead of a solid rod, a wire covered choke is used. The rod 26" has secured at its outer end a control button 39" and is connected at its opposite end to the choke or throttle operating wire 95. The rod portion 26" slides through a tubular sleeve or housing 96 which latter is engaged by the bushing or gasket 38", the latter being seated in an opening in the drawer end wall The yoke comprising legs G5" and 46 corresponds to sections of the rod A l on the throttle or A l on the choke and continues back to the operating dash pct 42 or 32 respectively. The pin 69 is secured to the rod 26", extending transversely therefrom and serves to operate in a manner corresponding to the action of the sleeve or collar 49 providing the spacer function as described in connection with Figure 2. The bracket 36 with its slot 31 is arranged to engage the pin, as a result of outward movement of the handle 16, in a manner similar to the operation described in connection with Figure 3. The wire 95 passing through the conduit. 96 serves to operate the throttle lever 4| on the carburetor (or the choke lever) depending upon Y-fitting 54 which, in turn, is connected by piping 55 to the intake manifold 56 of the automobile motor or to the vacuum source utilized. The cylinder 5| for-ms a vacuum controlled dash pot in which is slidably mounted a leather piston 57 secured to one end of the piston rod 58-58 which at its other endis fixed to an elbow pin 59 depending from a second slide 60 of insulating material and mounted so that. its upper edge slides substantially flush with the top edge of the main slide plate 3|. This slide 60*(see Fig. 5) is supported to slide on a flange 6| turned inwardly from the vertical flange 62 of a casingplate 63 secured to the top edge of-the partition l8, and secured by its flange 64 to the side of the drawer 6. p

A tension spring 65 is detachably secured at one end to the head plate-56 and has its other end detachably-secured to 'aneyelet -66 fixed in turn to-the rear end ID ofthe drawer 6. Obviously, this tension spring 65 is intended to resist the sliding movement of the main slide plate 3| outwardlyin the drawer 6. A second tension spring 61- is secured at one end to the end wall HI of the drawer'fi and at its-other end is secured so as to act on the rod or the piston 5?.

It will be apparent from inspection of Figure 3 of outward movement of the second slide '60, the outer end of which is connected to a rod 58 extending through a bushing 69 and provided at its outer end with the manipulating handle 18.

The contact plate 92 is set into 'a recess formed on the outer face of the main slide plate 3| and substantially flush with that face. The outer end of the second slide 60 is laterally enlarged, and this enlargement 1| is transversely bored to provide a cylinder 12 in which a piston 13 (preferably of insulating material) is mounted to reciprocate. The head of the cylinder 12 is bored to receive slidably a contact rod 14 connected by the wire 92 first to the starting motor relay 93 and onto the starting motor 23. A casing 15 is secured to the enlargement 1| and is bored to form a cylinder 16 in which a leather piston 11 is suitably secured to the outer end of the piston 13. A. spring 18 within the cylinder 16 engages the head of the leather piston to force the end of the contact rod 14 normally into contact with the outer face of the main slide 3| and in position to engage slidably the face of the contact plate 32.

The outer end of the casing 15 is apertured to receive an elbow fitting 19 connected by a flexible tube 80 to the Y-fitting 54, which, as already described, is connected by a tubing 54, through the piping 55, to the source of vacuum utilized. This construction is intended to withdraw the piston 13 and its contact rod 14 out of electrical contact with the plate 32 when the engine itself is operating, the contact 14 being intended to control the operation of the starter motor only and to remain in contact with the plate 32 for such time only as may be necessary to efiect the starting of the motor. The rod 14 is connected to wire 92 which leads to the relay and on to the starting motor.

The enlargement 1| is also provided with a transverse aperture 8| in which is mounted a conducting rod 82 spaced from rod 14 and provided at one end with a head 83 adapted to be held by a spring 84 in constant yielding contact with the face of the main slide 3|. It is arranged in turn to engage a second contact plate 32 on the end of a conducting rod 32 which latter extends through the plate 3 I. The outer end or the contact rod 82 is screw-threaded to receive the nuts 85 and 86 for clamping thereto a terminal connection 81 on the end of the wire 93 which connects the rod 8| .to the coil 24.

A stop bracket 88 is fixed to the rear side of the head 15 and is provided at its upper end with a stop member 89 slotted to straddle the choke rod The member 89 is so located that it will not contact with the end of the spacer 49' until the end of the second slide 60 is in contact with the head plate 50 which projects laterally from the end of the main slide 3|.

When all the parts are in normal inoperative position, the inner end 99 of the main slide 3| is in contact with the stop 9|, stamped out from partition |8 for this purpose. In starting the engine, the operator merely pulls on the knob 10 until it is stopped by contact of the enlarged end of the second slide 60 with the laterally projecting head 50. During this movement, the contact rod 14 comes into sliding contact with the contact plate 32, and closes the circuit through wire 2|, which is grounded, wire 92 to starter relay 93, wire 26, terminal 25, to one side of battery B and back to ground by lead 94 thus operating the starting motor relay 93', and in turn the starting motor 23 by circuits; 94B--25-2693'21 232|' in grotuid. It will be understood that to operate the choke and throttle.

the starting motor may be operated directly without a relay, if it is arrangeable. Next, the ignition contact 83 slides onto the contact plate 32 and closes the circuit from the battery B through the wire 93 to the ignition coil 24. As soon as the motor starts under. control of the ignition system, the vacuum induced by the operation of the motor operating through conduit 55-19 retracts the piston 13 and its contact rod 14 to cut the starter motor out of operation.

The operation just described is all that is necessary during warm weather or when the engine is hot. With a cold engine, it is usually necessary The choke and throttle are set in operation by continuing the pull on the handle 10 after the enlarged end 1| of the second slide 60 has engaged the laterally extending plate 50. When the handle 10 is pulled out to its limit, it pulls out the main slide 3| against the resistance of the spring 65. At the same time, the stops 36 and 89 engage the spacers 49 and 49' on the throttle and choke rods 2|! and 2 8 respectively.

Upon release of the handle 10, the main slide 3| is snapped back against the stop 9| by the tension of the spring 65 and 61. However, the outer end of the second slide 60 remains in engagement with the head plate 58 (on the main slide 3|) as a result of the vacuum exerted on the piston 51 in the cylinder 5| which opposes the restoring action of spring 61. It will be obvious that when the slide 50 was pulled by the handle 10, the piston 51 was forced into the cylinder 5| against the tension of the spring 61. When the engine stops and the vacuum in the cylinder 5| is thereby broken, the tension of the spring 61 immediately pulls the piston 51 and the rod (connected by the pin 59 to the second slide 60), to restore the parts to initial inoperative position.

Since the vacuum acting on the piston 51 maintains the slide 60 in such a position as to preserve the ignition circuit through the contacts 32' and 83', it becomes necessary to break this circuit when it is desired to manually shut off the engine. A lost motion connection is provided on the rod 58'to accomplish this result. A sleeve 91 is secured to the rod 58 by welding 98 or some other appropriate type of fastening. This sleeve is concentric with the rod 58 and provides a sleeve bearing for the portion of the rod 58' which is secured to the piston 51. A spring 99 tends to hold 5858" together.

In the manual starting of the engine, the rod 58 is drawn to the left as viewed in Figure 3,

since it is connected to the slide 60 by the arm 59.

This movement is against the action of spring 61. When the parts have moved to the limit necessary and the engine is placed in operation the vacuum acting in cylinder 5| will continue to act on piston 51 and counteract the restoring action of the spring 61. It will be observed that by manually returning the handle 10 to the right in Figure 3, the rod 58 will move to the right without interfering with the vacuum action on the piston 51 due to the sliding sleeve connection 91- 58. However, as soon as the slide 68 is moved to the right, the connection between the contacts 83 and 32' will be broken thereby breaking the ignition circuit to the engine. This will stop the operation of the engine resulting in the loss of vac uum which in turn will release the piston 51 and allow the spring 61 to restore the parts 58 and 58 of the rod to their close engagement as seen in Figure 3.

The pistons in the dash pots 42 and 42' cause the' rods 44 and 45 to pull the throttle and choke rods and back slowly to inoperative position. However, the throttle and choke rods may obviously be moved quickly to any position by the operating buttons 39 and 39.

The various pistons 43, 43', 11, etc., have been preferably constructed by using a leather cup which is secured. to the piston rod or piston proper by means of screw threaded metal elements with interposed leather washers. This construction is such that by reducing the tension applied to the cup by the Washers by means of the screw threaded nuts, a greater or lesser amount of air leakage is permitted about the stem of the piston rod. In this manner, the action of the dash pots can be accurately regulated to provide a controlled dash pot action without theneed for separate valves or valve mechanism.

Spring 65 is'not considered as a part of thedevice for the automatic return of the common manual means to inoperative position, and is only used when either the choke or throttle mechanisms or both of them are included in the governor, as otherwise plate 3! is not required to slide. Spring 65 is primarily required to cause the retention of plate 3! in its normal inoperative position against stop 9! as the operation of plate 68 might displace it.

Spring 65 is secondarily required to promptly return both plates 3i and 60 from choke and throttle operative position to normal position for operation of the engine.

If the throttle control is dispensed with and the choke is retained the throttle control will suffice to operate the choke and make a better installation. When both are dispensed with plate 3| would be stationarily attached to it.

Although the ignition line 22 and starter line 52 supplying current to the governor are not shown as passing through an intervening locking switch on their way to the governor, the locking switch is common with all automotive vehicles and such wiring is advantageous for this governors use and allows the common manual means to be returned to inoperative position by turning off the independent switch and such means is obviously allowable for use with this governor and is described in the alternative plan for construction of the governor.

What I claim is:

l. A control for an internal combustion engine having starter motor and ignition systems with normally open circuits, and choke and throttle valves for controlling the fuel intake of said en.- gi ne, said control comprising: common manual means operable by movements through a dis tance for closing said motor and ignition system circuits, and operable by further movement through an additional distance for operating the throttle and choke valves of said engine, means controlled by the operation of the engine after thestarting thereof to open the circuit through said starting motor and maintain the circuit broken so long as the engine is in operation, and means operable upon the release of said common manual means for moving the choke and throttle valves to normal position.

2. The combination with the control set forth in claim 1 of yielding means for retarding the movements of the choke and throttle valves from operative to inoperative positions.

3. The combination with the control set forth in claim 1 of yielding means for retarding the movements of the choke and throttle valves from operative to inoperative positions, said choke and throttle valves being operable independently of said yielding means after release of the common manual control.

4. The combination with an internal combustion engine having normally open circuits for the ignition and starting systems, a regulated vacuum force during engine operation and means for obtaining vacuum therefrom, of: a common manual control for closing and opening the circuits, a separate means for vacuum power to open the starter circuit and maintain the said circuit open as long as the engine operates, means for vacuum power to hold the common manual control in operative position, means operable upon the break of vacuum to return the common manual control and thereby break the ignition circuit, means to manually return the common manual control largely avoiding its retention by vacuum force.

5. In a controller for an internal combustion engine having a battery, starter and ignition systems arranged to be energized fromthe battery, and choke valve arranged to control the air mixture to the engine, common means to energize said circuits from the battery and after determinate movement to effect the operation of said choke valve, retracting and retarding means normally tending to restore the choke valve to its normal position without interfering with the operation of said first named means, and manual means arranged to manually operate the choke valve independently of the common means.

6. A control for an internal combustion engine having a starter motor with normally open circuits and ignition system, and choke valve for controlling the air intake of said engine, said control comprising: a control rod for moving said valve, common manual means operable by move ments through a determinate distance for energizing said motor and ignition system circuits, and operable by further movement thrpugh an additional determinable distance for operating said control rod and the choke valve of said engine, means retracting said rod and the choke valve of said engine to normal valve position, and means arranged to retard the operation of said retracting means, means controlled by the'operation of the engine after the starting thereof to open the circuit through said starting motor and maintain the circuit broken so long as the engine is in operation, and means operableupon the release of said common manual means for allowing said retracting means to move the choke valve against said retarding means to normal po- 3 sition.

7. A control for an internal combustion engine having a starter motor and ignition system with normally open circuits and choke valve for controlling the air intake of said engine, said control comprising: control means for movingsaid valve, common manual means operable by movements through a distance for energizing said motor and ignition system circuits and operable by further movement through an additional distance for operating said control means and thereby the choke valve of said engine, means retracting said control means to normal valve position, means arranged to retard the operation of said retracting means, means controlled by the operation of the engine after the starting thereof to open the circuit through said starting motor and to maintain said circuit open so long as the engine is in operation, means operable upon the release of said common manual means for allowing said retracting means to move the'choke valve to normal position against said retarding means, and means operable to return the manual means to its inactive position.

8. In an automatic controller for internal combustion engine having a starting motor system, and an ignition system with normally open circuits and a vacuum source governed by the engine and means for obtaining vacuum force therefrom; the combination of common manual control for closing said circuits successively, means operated by the vacuum force for opening the starting motor circuit and maintaining said circuit open during the operation of said engine, and means operable by break of said vacuum to open the ignition circuit.

9. An automatic controller for internal combustion engines comprising in combination a normally deenergized ignition system and engine starting means each having normally ineffective circuits, a common manual control for successively energizing said circuits, means operated in response to vacuum created by operation of the engine for deenergizing the starter means circuit, means responsive to lack of vacuum for opening the ignition circuit, and manual means effective to deenergize the ignition circuit.

10. In an internal combustion engine, means for vacuum power alone during the operation of the engine to hold a part or element in a manually operated position the vacuum power overcoming a springs force tending to retain it in the position from which it was manually operated, means combined with the first means to largely avoid the vacuum forces in manually returning the part or element to the position from which it was first manually operated.

11. The combination with a governor for a gas engine, the engine having a choking means and a starter breaker and the governor a manual means to energize the engines starting circuit; of, a choke return control operated by the governors manual means having retracting and retarding means for the return of the choking means.

12. A controller for a gas engine, comprising in combination; a control rod manual operation of which causes the engine starting and ignition circuit contacts to meet, means operated by the engines vacuum power directly withdrawing one of the starter contacts and so retaining it during engine operation and the continuation of the ignition contacts in contact position, means 0perable on lack of vacuum returning the control rod and thereby both breaking the ignition contacts and returning the starter contact to its first position, and manually actuated means to return the control rod, largely independently of means for its retention by vacuum power.

13. In a governor for an internal combustion engine having means for a regulated vacuum force when the engine is operating, the governor having a manual control opposed by a spring and having means to energize and deenergize the engines circuits; a circuit breaker, comprising in combination, means for vacuum power alone to overcome a springs force and govern a circuit, combining a rod having a one-way attachment to a manual control and to a vacuum means the rod tending to be held to its broken connection by a springs force; whereby the entire combination holds the circuit in both closed and open position governed and powered by vacuum force alone and manual 'deenergization is opposed only by a s'prings force.

14. A controller for a gas engine of the automobile type comprising, in combination; a manual means to operate the control having means to energize the engine circuits, means for vacuum power alone to hold the manual means in energized position and to break and hold the starter circuit open, manual means optional to the operator to energize the starter circuit ahead of the ignition to whatever extent seems desirable or to energize both circuits simultaneousll accomplished by a stepped or a fast movement respectively, a starter circuit contact being yieldingly installed and set closer to its complementary contact than are the ignition contacts.

15. A manually operated controller for an internal combustion engine having a choke valve and choke rod, the controller having a manual means with means to energize the engine's starter and ignition circuits opposed in movementby a springs force, means for vacuum power alone during engine operation only to maintain the manual means in energized position, manual means to operate the choke rod by a further movement of the manual means, automatic means to return same slowly, means to close the starter circuit first when the manual means is operated in a stepped movement.

16. In a gas engine of the automobile type having a source of governed vacuum power during engine operation only and a choke valve and choke rod, a manually operated controller having a, manual means with a spring opposing its movement with means to energize the engines ignition and starter circuits, means for vacuum power alone to directly hold the manual means in energized position and to break and hold the starter circuit open, means for further movement of the manual means to operate the choke rod, automatic means to return the choke rod slowly, and means to manually return the manual means largely independent of vacuum force.

17. The combination with a gas engine having starter and ignition circuits, a starter breaker, a choking means and a source of regulated vacuum during engine operation; of, a governor having a common manual control opposed by a spring in movement with means to energize the starter circuit ahead of the ignition by a stepped movement when desirable and to break the contact positions in reverse movement, largely avoiding a means for vacuum force to directly hold the manual control in energized position, manual means operable on further movement of the manual control by a one way connection to operate the choking means, automatic means to retract and retard the choking means, manual means to fully adjust the position of the choking means upon release of the manual control sometimes subject to the retracting means but avoiding the retarding means by a one way connection.

18. A governor for an internal combustion engine having starting and ignition systems with normally open circuits, and a choke valve connected by a choke rod to a manual choke knob, the governor comprising in combination: a sliding control rod for closing and opening the circuits in a first movement and operating the choke rod in a further movementretracting means to return the choke rod to normal position opposed bya slow regulatable yielding means, means to manually operate the choke rod on release of the manual means independently of the yielding means.

19. The combination with a governor for a gas engine having a manually operated choking means, the governor having a manual means with means to energize the engines starter 'circuit; of, a choke return'control operated by the governors manual means having retracting and retarding means with means to manually operate the choking means independently of the manual means after the release of same.

20. The combination only with a governor for a gas engine having starter and ignition'systems with normally open circuits and means to obtain vacuum force and a choke means, the governor having a common manual means to energize the circuits by movement through a distance: of a choke control operated by a further movement of the common manual means, having retroactive and retarding meansz-means to manually operate the choke independently of the common manual means upon releasing same: the retarding means being governedby a slow escape of air from a'closed end dash pot chamher through a plunger cup assembly on a rod urged by the retracting means.

21. In a control for a gas engine having ignition and starting systems with normally open circuits and a means for regulated vacuum force: a manual rod directly carrying contacts for both circuits, energizing and deenergizing the circuit, a starter breaking means operated by vacuum suction, means for vacuum suction power only to hold the common manual rod in operating position, manual means to return the common manual rod largely avoiding the last means.

22. In a governor for an internal combustion engine, a common manual control rod having means 'to energize the 'engines starter circuit ahead of the engines ignition circuit when operated (slowly or by a stepped movement) only, and a starter breaker in the starter circuit having means for vacuum power alone to both break and hold the starter circuit open during engine operation.

23. A governor for a gas engine having a manual control rod for energizing the en n s irwits and a choking means and choke rod, means for .the manual control rod to operate the choke rod, retracting and retarding means to'return 4 24. In a controller for an internal combustion engine having a starter motor, starting system, electric circuit therefor and an ignition circuit, each of which being normally open, said controller having common manual means for energizing the circuits and capable of operation by a slow movement; a switch with a more extensive contact for the starter circuit and arranged to come into contact by the first movement of the common manual means, and subsequently the ignition circuit contacts.

25. The combination with an internal combustion engine having normally open circuits for the ignition and starter motor systems and having an intake manifold and means for obtaining vacuum power therefrom of a common manual control for closing the circuits which if moved slowly energizes the starter first and then energizes the ignition circuit, separate mean operated by vacuum power to open the starter motor circuit and maintain the said circuit open as long as the engine operates, manual means to return the common manual control to normal inoperative position thereby breaking the the choke rod slowly and means to operate the choke rod manually upon the release of the manual control rod independently of same and also of the retarding'means.

ignition circuit and causing the separate means to assume its first position.

26. In an automatic controller for internal combustion engine including a starting motor and an ignition system having normally open circuits, the combination of a common man ual control closing said circuits, means operated by the intake vacuum for opening the starting motor circuit and maintaining said circuit open during the operation of said engine, means operable by break of said vacuum to open the ignition circuit, and manually actuated means for opening the ignition largely independently of said last named means.

27. The combination with a governor for a gas engine having a choking means and the governor a manual means; of a choke return control operated by the governors manual means having means for a slow return of the choke and means to operate it independently of the governors manual mean upon the manual release of same.

GEORGE A. ROBBINS; 

